Bug#1027065: Clarification

[Ludovic Brenta <ludovic@ludovic-brenta.org>]

On bookworm (testing) I get:

$ gm2 --version
gm2 (Debian 12.2.0-10) 12.2.0
Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gm2 hello.mod
hello.mod:1:2: error: expecting one of: ‘IMPLEMENTATION’ ‘MODULE’ ‘DEFINITION’
    1 | FROM StrIO IMPORT WriteString, WriteLn;
      |  ^~~~
hello.mod:1:2: error: compilation failed

Adding a first line, "MODULE hello;" makes the program legal but then I
get the same symptoms as in the original bug report.

Adding -fpim2 or -fpim3 to the compiler command line has no effect.

Adding -fiso silences the compiler even though StrIO is not an ISO
module.  Therefore a complete workaround is:

$ cat hello.mod
MODULE hello;
FROM StrIO IMPORT WriteString, WriteLn;
BEGIN
 WriteString('hello world');
 WriteLn
END hello.
$ gm2 -fiso hello.mod -o hello
$ ./hello
hello world

It seems that libm2pim.so lacks some necessary functions which
libm2iso.so has.

-- 
Ludovic Brenta.